Interview: Ray Kerins, VP, worldwide communications, Pfizer

Ray Kerins, VP of worldwide communications for Pfizer, talks to Jaimy Lee, healthcare reporter, from the company's newsroom about the Pfizer Twitter feed and how social media has changed the way the company listens to its audiences.

Ray Kerins, VP of worldwide communications for Pfizer, talks to Jaimy Lee, healthcare reporter, from the company's newsroom about the Pfizer Twitter feed and how social media has changed the way the company listens to its audiences.